Petee s



P. s. CARHART.

Cultivator.

Patented June 1(7), 1862.

No, .35,go5.

Wwiinessesy.

Inventor:

AM. PHDTO-LITHD. CU. NY. (CSBORNE'S PROCESS,

PETERwSfCARHA-RT, OF-.GOLI-JAMER, NEW-YORK. I

Specication forming part of Letters Patent No. 35,505. dated June 10, 1862.

.To all whom 'it 'may concern.: Beit known that I, PETER S. GARHART, of

^ Collamer, in the county of Onondaga and State of New York, h ave invented a new and yImproved Oultivator; and I do hereby declare l .that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is a side sectional view of my invention, taken in the line a: x, Fig. 2. I Fig. 2 l

is a plan or top view of the same.

Similar letters of reference `indicate corresponding parts inthe two figures.

This invention relates to an improvement in that class of cultivators designed tobe drawn by two horses and be capable of being adjusted higher or lower, so that the teeth may penetrate a greater or less distance into the earth, as circumstances may require. (lultivators ot' this class have hitherto been mounted on Wheels and 'provided with means for raising and loweringthe frame bodily, t'ormin ga rather complex arrangement.

My invention consists in attaching the draftpole to the frame of the implement in such a manner that the latter'-will be supported by the former when the implement is in use, and

Vat the same time admit ot' the frame being adjusted to regulate, Without the aid of wheels, the depth of the teeth in the earth as may be required. 1

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

' A represents the frame of my improved implement, which may be constructed of wood and formed of two parallel transverse bars, a ct, connected near their ends by oblique bars b b, having reverse positions relatively with each other, so as to cause the frame to be .rather wider at its front than at its back part. (See Fig. 2.) The back ends ot' the side bars, b b, are rounded to form handles c c, and to the front and back bars, a a, teeth B are attached, which may be of the form usually employed in cultivators. The teeth of one bar a are in line` with the centers ofV the spaces between the teeth `ot' the other bar, as shown in Fig. 2.

C is the draft-pole, which is attached to the front bar a ofthe frame A by means of a bolt,

d, which passes horizontally through the pole,

`and a socket, D,in which the' latter is tted. The bolt d passes loosely through the pole C,

and the latter extends back over the back bar 'ot of the frame A, and has a meta-l plate, E, at its right-hand side, which plate is provided with a rack, e, at. its front end,'and is serrated or notched at its back end, as shown at f. The plate E is secured to the back bar ot `of the frame A, and it has a vertical slot', g, made in it, through which a screw, h, passes into the pole G, said screw .securing a lever, F, to the pole C, and keeping the former in contact with the outer side of plate E. The front end of the lever F has a toothed Vsegment, t', formed on"it, which gears into the rack e of the plate E. To the lever F` there is attached a small lever, G, the front end of which is bent to form a pin, j, which passes drawn along, the draft-pole C is fitted as usual` to the pole-straps of the harness, and when it is desired to have the teeth B penetrate the earth to their greatest depth the lever G is depressed at its back end, and this causes the front teeth B of the implement to be about on a level with the back teeth., When, however, they are not required to penetrate so deep the back end of the lever G is raised,- and this gives the front teeth a greater elevation than the back teeth. In adjusting the lever F-the pin j of course is thrown out from the notches f of plate E by pressing on the small lever G, the spring k throwing the pinj back into one of the notches f as soon as itis liberated vby the driver. It will be seen that by this adjustment of the lever F the frame A of theimplement is varied relatively with the draftpole, the slot g in the plate E not allowing the screw h to interfere with the rising and falling of 4plate E and frame A. By this arrangement I dispense entirely with the use of wheels, and hence have an implement of much .lighter draft than usual,while the adjustmentof the frameA as described, to regulate the depth of the peneh tration of the teeth Bin the earth, may be made with much greater facility than by the means hitherto used for adjusting frames mounted on wheels.

Having thus described my invention, wh at I claim as new, and desire to secure by Letters Patent, is-

The means, substantially as shown and described, for regulating the depth of the penetration of the teeth B of the implement in the ground, to wit: theattaching of the draft-pole C to the front bar a of the frame by a bolt, d, and havingits back end connected to the back bar a ofthe frame by a rack-plate, E, lever F, provided with a toothed segment, i, and an adjustable pin, j, which lits in notches f in plate E, to operate as set forth.

PETE [t S. CARHART. Witnesses:

JAMES LAIRD, J. W. CooMBs. 

